Bis{μ-cis-1,3-bis­[(di-tert-butyl­phosphan­yl)­oxy]cyclo­hexane-κ2P:P′}bis­[carbonylnickel(0)] including an unknown solvent molecule

Jonasson, K.J.; Wendt, O.F.

doi:10.1107/S1600536814007818

metal-organic compounds

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ISSN: 2056-9890

Volume 70| Part 5| May 2014| Pages m176-m177

doi:10.1107/S1600536814007818

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Bis{μ-cis-1,3-bis[(di-tert-butylphosphanyl)oxy]cyclohexane-κ²P:P′}bis[carbonylnickel(0)] including an unknown solvent molecule

Klara J. Jonasson ^a and Ola F. Wendt ^a ^*

^aCentre for Analysis and Synthesis, Department of Chemistry, Lund University, PO Box 124, S-221 00 Lund, Sweden
^*Correspondence e-mail: ola.wendt@chem.lu.se

(Received 4 April 2014; accepted 8 April 2014; online 12 April 2014)

The title compound, [Ni₂(C₂₂H₄₆P₂O₂)₂(CO)₂], is located about a centre of inversion with the Ni⁰ atom within a distorted trigonal–planar geometry. The cyclohexyl rings are in the usual chair conformation with the 1,3-cis substituents equatorially oriented. No specific intermolecular interactions are noted in the crystal packing. A region of disordered electron density, most probably a disordered deuterobenzene solvent molecule, was treated using the SQUEEZE routine in PLATON [Spek (2009 ). Acta Cryst. D65, 148–155]. Its formula mass and unit-cell characteristics were not taken into account during refinement.

CCDC reference: 996025

Related literature

For similar 16-atom macrocyclic dimers with Ni^II, see: Johnson & Wendt (2011 ); Castonguay et al. (2008 ); Pandarus et al. (2008 ). For 16-atom macrocyclic dimers of Pd^II and Pt^II with cis-1,3-bis-(di-alkylphosphinito)cyclohexane ligands, see: Sjövall et al. (2001 ) and Olsson et al. (2007 ), respectively. For other examples of Ni⁰ atoms adopting a close to trigonal–planar geometry, see: Rosenthal et al. (1990 ); Maciejewski et al. (2004 ); Brun et al. (2013 ). For an example of a carbon monoxide-induced reductive elimination from a PNP pincer-supported Ni^II hydride complex to form a tetrahedral Ni⁰ dicarbonyl species (PNP = [N(2-PR₂-C₆H₃)₂]⁻), see: Liang et al. (2012 ).

Experimental

Crystal data

[Ni₂(C₂₂H₄₆O₂P₂)₂(CO)₂]
M_r = 982.50
Monoclinic, C 2/c
a = 31.7851 (9) Å
b = 8.5449 (2) Å
c = 21.3311 (5) Å
β = 90.995 (2)°
V = 5792.7 (3) Å³
Z = 4
Mo Kα radiation
μ = 0.80 mm⁻¹
T = 120 K
0.20 × 0.15 × 0.05 mm

Data collection

Agilent Xcalibur Sapphire3 diffractometer
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2011 ) T_min = 0.883, T_max = 1.000
27324 measured reflections
6958 independent reflections
4948 reflections with I > 2σ(I)
R_int = 0.073

Refinement

R[F² > 2σ(F²)] = 0.050
wR(F²) = 0.125
S = 1.09
6958 reflections
263 parameters
H-atom parameters constrained
Δρ_max = 0.61 e Å⁻³
Δρ_min = −0.46 e Å⁻³

Data collection: CrysAlis PRO (Agilent, 2011); cell refinement: CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: CrystalMaker (CrystalMaker, 2001 ); software used to prepare material for publication: SHELXL97.

Supporting information

CCDC reference: 996025

Crystal structure: contains datablock I. DOI: 10.1107/S1600536814007818/tk5304sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S1600536814007818/tk5304Isup2.hkl

checkCIF report

Structural commentary top

The title compound is formed through a carbon monoxide induced dimerization of a previously synthesized POCOP pincer Ni^II hydride complex. The course of the reaction is likely to proceed via a reductive elimination of a C—H bond between the metallated carbon and the hydride ligand. In the absence of carbon monoxide the POCOP pincer Ni^II hydride complex is stable towards reductive elimination in solution, even at 80 °C and upon addition of 1 eq. diphenylacetylene. Tricoordinate nickel(0) species are coordinately unsaturated, and the steric bulk of the tert-butyl substituents on the phosphorus atoms is likely to have a crucial stabilizing impact on the title compound. It decomposes over a period of hours upon exposure to air.

The title compound has a low solubility in C₆D₆ and attempts to obtain ¹H– and ¹³C-NMR spectra has been unsatisfactory. Dissolving the red crystals of the title compound in CDCl₃ results in a yellow/green solution and decomposition to several compounds, as indicated by ³¹P-NMR spectroscopy; none was successfully isolated or characterized.

Synthesis and crystallization top

A C₆D₆ solution of the compound trans-[NiH{cis-1,3-Bis-(di-tert-butylphosphinito) cyclohexane}] (10.0 mg, 0.021 mmol) was degassed with repeated freeze-pump-thaw cycles, before addition of CO (3 atm, 0.2 mmol, 10 eq.). Upon standing at room temperature the solution turned gradually darker, and within 48 h deep-red crystals of bis[µ-[cis-1,3-bis[(di-tert-butyl)phosphinito]cyclohexane]-κ²-P,P']- bis[carbonylnickel(0)] were formed. These were used directly in the X-ray diffraction experiment, but were dried in high-vacuum prior to the elemental analysis. Yield: 8.7 mg (82%). ³¹P{1H} NMR: (202.3 MHz, C₆D₆) δ: 177.8 (s). Anal. Calcd for C₄₆H₉₂Ni₂O₆P₄ (982.52): C 56.23, H 9.44. Found: C 56.02, H 9.47.

Refinement top

The H atoms were positioned geometrically and treated as riding on their parent atoms with C—H distances of 0.96–0.98 Å, and with U_iso(H) = 1.2–1.5 U_eq. The asymmetric unit contains half a molecule of the title complex and half a molecule of benzene but this could not be modelled successfully. Solvent contributions were therefore removed from the diffraction data with PLATON using the SQUEEZE procedure (Spek, 2009). SQUEEZE estimated the electron count in the void volume of 680 Å³ to be 140 which is in reasonable agreement with a total number of four benzene molecules in the unit cell.

Related literature top

For similar 16-atom macrocyclic dimers with Ni^II, see: Johnson & Wendt (2011); Castonguay et al. (2008); Pandarus et al. (2008). For 16-atom macrocyclic dimers of Pd^II and Pt^II with cis-1,3-bis-(di-alkylphosphinito)cyclohexane ligands, see: Sjövall et al. (2001) and Olsson et al. (2007), respectively. For other examples of Ni⁰ centres adopting a close to trigonal–planar geometry, see: Rosenthal et al. (1990); Maciejewski et al. (2004); Brun et al. (2013). For an example of a carbon monoxide-induced reductive elimination from a PNP pincer-supported Ni^II hydride complex to form a tetrahedral Ni⁰ dicarbonyl species (PNP = [N(2-PR₂-C₆H₃)₂]^-), see: Liang et al. (2012).

Computing details top

Data collection: CrysAlis PRO (Agilent, 2011); cell refinement: CrysAlis PRO (Agilent, 2011); data reduction: CrysAlis PRO (Agilent, 2011); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: CrystalMaker (CrystalMaker, 2001); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).

Figures top

Fig. 1. The molecular structure of the centrosymmetric title compound with atom labels and 30% probability displacement ellipsoids. Unlabelled atoms are related by the symmetry operation: 3/2-x, 1/2-y, -z. H-atoms are omitted for clarity.

Bis{µ-cis-1,3-bis[(di-tert-butylphosphanyl)oxy]cyclohexane-κ²P:P'}bis[carbonylnickel(0)] top

Crystal data top

[Ni₂(C₂₂H₄₆O₂P₂)₂(CO)₂]	F(000) = 2128
M_r = 982.50	D_x = 1.127 Mg m⁻³
Monoclinic, C2/c	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -C 2yc	Cell parameters from 6436 reflections
a = 31.7851 (9) Å	θ = 2.5–29.1°
b = 8.5449 (2) Å	µ = 0.80 mm⁻¹
c = 21.3311 (5) Å	T = 120 K
β = 90.995 (2)°	Plates, red
V = 5792.7 (3) Å³	0.2 × 0.15 × 0.05 mm
Z = 4

Data collection top

Agilent Xcalibur Sapphire3 diffractometer	6958 independent reflections
Radiation source: Enhance (Mo) X-ray Source	4948 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.073
Detector resolution: 16.1829 pixels mm^-1	θ_max = 29.1°, θ_min = 2.5°
ω scans	h = −42→35
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2011)	k = −11→11
T_min = 0.883, T_max = 1.000	l = −26→26
27324 measured reflections

Refinement top

Refinement on F²	Primary atom site location: structure-invariant direct methods
Least-squares matrix: full	Secondary atom site location: difference Fourier map
R[F² > 2σ(F²)] = 0.050	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.125	H-atom parameters constrained
S = 1.09	w = 1/[σ²(F_o²) + (0.050P)²] where P = (F_o² + 2F_c²)/3
6958 reflections	(Δ/σ)_max = 0.001
263 parameters	Δρ_max = 0.61 e Å⁻³
0 restraints	Δρ_min = −0.46 e Å⁻³

Crystal data top

[Ni₂(C₂₂H₄₆O₂P₂)₂(CO)₂]	V = 5792.7 (3) Å³
M_r = 982.50	Z = 4
Monoclinic, C2/c	Mo Kα radiation
a = 31.7851 (9) Å	µ = 0.80 mm⁻¹
b = 8.5449 (2) Å	T = 120 K
c = 21.3311 (5) Å	0.2 × 0.15 × 0.05 mm
β = 90.995 (2)°

Data collection top

Agilent Xcalibur Sapphire3 diffractometer	6958 independent reflections
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2011)	4948 reflections with I > 2σ(I)
T_min = 0.883, T_max = 1.000	R_int = 0.073
27324 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.050	0 restraints
wR(F²) = 0.125	H-atom parameters constrained
S = 1.09	Δρ_max = 0.61 e Å⁻³
6958 reflections	Δρ_min = −0.46 e Å⁻³
263 parameters

Special details top

Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes.

Refinement. Refinement of F² against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F², conventional R-factors R are based on F, with F set to zero for negative F². The threshold expression of F² > σ(F²) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F² are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å²) top

	x	y	z	U_iso*/U_eq
Ni1	0.882994 (11)	0.29002 (4)	0.082823 (15)	0.01812 (11)
P1	0.83832 (2)	0.33932 (7)	0.15811 (3)	0.01714 (16)
O1	0.78777 (6)	0.29472 (19)	0.16116 (8)	0.0207 (4)
C1	0.78065 (8)	0.2143 (3)	−0.11259 (12)	0.0203 (6)
H1A	0.7814	0.1012	−0.1089	0.024*
H1B	0.7917	0.2423	−0.1532	0.024*
P2	0.88701 (2)	0.22270 (7)	−0.01654 (3)	0.01594 (15)
O2	0.85052 (6)	0.2342 (2)	−0.07197 (8)	0.0218 (4)
C2	0.73525 (8)	0.2701 (3)	−0.10868 (12)	0.0196 (6)
H2	0.7231	0.2309	−0.0698	0.023*
O3	0.96746 (7)	0.3500 (3)	0.13009 (11)	0.0510 (6)
C3	0.73284 (9)	0.4468 (3)	−0.10912 (13)	0.0264 (6)
H3A	0.7038	0.4791	−0.1042	0.032*
H3B	0.7423	0.4857	−0.1492	0.032*
C4	0.75974 (9)	0.5172 (3)	−0.05680 (14)	0.0280 (7)
H4A	0.7487	0.4860	−0.0166	0.034*
H4B	0.7587	0.6304	−0.0594	0.034*
C5	0.80545 (9)	0.4621 (3)	−0.06177 (13)	0.0249 (6)
H5A	0.8172	0.5017	−0.1003	0.030*
H5B	0.8219	0.5041	−0.0269	0.030*
C6	0.80822 (8)	0.2861 (3)	−0.06116 (12)	0.0194 (6)
H6	0.7991	0.2472	−0.0204	0.023*
C7	0.93363 (11)	0.3218 (3)	0.11184 (14)	0.0321 (7)
C11	0.83370 (9)	0.5570 (3)	0.16926 (12)	0.0226 (6)
C12	0.80724 (11)	0.6148 (3)	0.11321 (14)	0.0341 (7)
H12A	0.7798	0.5681	0.1144	0.051*
H12B	0.8207	0.5858	0.0750	0.051*
H12C	0.8046	0.7266	0.1152	0.051*
C13	0.81175 (10)	0.6059 (3)	0.22944 (13)	0.0326 (7)
H13A	0.7845	0.5579	0.2308	0.049*
H13B	0.8087	0.7177	0.2302	0.049*
H13C	0.8283	0.5729	0.2651	0.049*
C14	0.87701 (10)	0.6353 (3)	0.16623 (15)	0.0342 (7)
H14A	0.8942	0.6012	0.2011	0.051*
H14B	0.8737	0.7469	0.1679	0.051*
H14C	0.8903	0.6069	0.1278	0.051*
C15	0.85457 (9)	0.2395 (3)	0.23398 (12)	0.0226 (6)
C16	0.86514 (10)	0.0712 (3)	0.21485 (13)	0.0303 (7)
H16A	0.8870	0.0725	0.1844	0.045*
H16B	0.8405	0.0221	0.1971	0.045*
H16C	0.8745	0.0135	0.2511	0.045*
C17	0.89435 (10)	0.3151 (3)	0.26297 (13)	0.0287 (7)
H17A	0.8883	0.4209	0.2748	0.043*
H17B	0.9164	0.3146	0.2328	0.043*
H17C	0.9032	0.2567	0.2994	0.043*
C18	0.81986 (10)	0.2332 (3)	0.28269 (13)	0.0317 (7)
H18A	0.8128	0.3376	0.2954	0.048*
H18B	0.8296	0.1747	0.3185	0.048*
H18C	0.7954	0.1833	0.2648	0.048*
C21	0.92859 (9)	0.3402 (3)	−0.05827 (13)	0.0227 (6)
C22	0.92236 (10)	0.5106 (3)	−0.03761 (16)	0.0352 (8)
H22A	0.9251	0.5175	0.0072	0.053*
H22B	0.8948	0.5455	−0.0505	0.053*
H22C	0.9433	0.5755	−0.0566	0.053*
C23	0.92422 (10)	0.3335 (3)	−0.12995 (14)	0.0329 (7)
H23A	0.8962	0.3636	−0.1424	0.049*
H23B	0.9296	0.2288	−0.1440	0.049*
H23C	0.9441	0.4039	−0.1483	0.049*
C24	0.97330 (9)	0.2906 (3)	−0.03876 (14)	0.0277 (6)
H24A	0.9762	0.2945	0.0061	0.042*
H24B	0.9933	0.3604	−0.0572	0.042*
H24C	0.9784	0.1858	−0.0530	0.042*
C25	0.89841 (9)	0.0076 (3)	−0.02237 (12)	0.0212 (6)
C26	0.93066 (10)	−0.0421 (3)	0.02756 (13)	0.0306 (7)
H26A	0.9572	0.0072	0.0195	0.046*
H26B	0.9340	−0.1537	0.0265	0.046*
H26C	0.9211	−0.0110	0.0682	0.046*
C27	0.85646 (10)	−0.0734 (3)	−0.00816 (14)	0.0317 (7)
H27A	0.8357	−0.0441	−0.0393	0.047*
H27B	0.8472	−0.0418	0.0325	0.047*
H27C	0.8603	−0.1848	−0.0088	0.047*
C28	0.91206 (10)	−0.0450 (3)	−0.08764 (13)	0.0287 (7)
H28A	0.8912	−0.0139	−0.1182	0.043*
H28B	0.9150	−0.1568	−0.0882	0.043*
H28C	0.9385	0.0028	−0.0973	0.043*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Ni1	0.0181 (2)	0.01832 (18)	0.01790 (19)	0.00151 (13)	−0.00099 (14)	−0.00328 (12)
P1	0.0194 (4)	0.0159 (3)	0.0160 (3)	0.0014 (3)	−0.0019 (3)	−0.0026 (2)
O1	0.0177 (10)	0.0275 (10)	0.0168 (9)	−0.0013 (8)	−0.0016 (8)	−0.0021 (7)
C1	0.0189 (15)	0.0226 (13)	0.0195 (13)	0.0009 (11)	0.0016 (11)	0.0035 (10)
P2	0.0155 (4)	0.0157 (3)	0.0166 (3)	0.0024 (3)	−0.0002 (3)	0.0007 (2)
O2	0.0164 (10)	0.0310 (10)	0.0179 (9)	0.0043 (8)	−0.0004 (8)	0.0011 (7)
C2	0.0185 (15)	0.0272 (14)	0.0130 (12)	−0.0007 (11)	−0.0015 (11)	0.0003 (10)
O3	0.0249 (14)	0.0843 (18)	0.0434 (15)	−0.0081 (13)	−0.0078 (11)	−0.0117 (12)
C3	0.0228 (16)	0.0263 (14)	0.0299 (16)	0.0042 (12)	−0.0022 (13)	−0.0033 (11)
C4	0.0252 (17)	0.0259 (14)	0.0328 (16)	0.0066 (12)	−0.0059 (13)	−0.0069 (11)
C5	0.0227 (16)	0.0273 (14)	0.0246 (14)	0.0012 (12)	−0.0034 (12)	−0.0039 (11)
C6	0.0168 (15)	0.0271 (14)	0.0141 (12)	0.0027 (11)	−0.0002 (11)	0.0019 (10)
C7	0.0313 (19)	0.0401 (17)	0.0249 (16)	−0.0002 (14)	−0.0007 (14)	−0.0080 (12)
C11	0.0256 (16)	0.0165 (12)	0.0257 (14)	0.0024 (11)	0.0002 (12)	−0.0032 (10)
C12	0.047 (2)	0.0236 (15)	0.0315 (17)	0.0094 (14)	−0.0019 (15)	0.0035 (12)
C13	0.042 (2)	0.0256 (15)	0.0302 (16)	0.0111 (14)	0.0045 (14)	−0.0059 (12)
C14	0.0341 (19)	0.0184 (13)	0.050 (2)	−0.0020 (13)	0.0053 (15)	−0.0072 (12)
C15	0.0227 (16)	0.0261 (14)	0.0188 (13)	0.0022 (12)	−0.0047 (11)	0.0017 (10)
C16	0.0355 (19)	0.0226 (14)	0.0325 (16)	0.0049 (13)	−0.0088 (14)	0.0020 (11)
C17	0.0278 (18)	0.0333 (16)	0.0247 (15)	0.0007 (13)	−0.0099 (13)	−0.0024 (11)
C18	0.0328 (19)	0.0401 (17)	0.0221 (15)	0.0033 (14)	−0.0012 (13)	0.0046 (12)
C21	0.0180 (15)	0.0223 (13)	0.0278 (15)	0.0008 (11)	0.0010 (12)	0.0032 (11)
C22	0.0286 (18)	0.0213 (14)	0.056 (2)	−0.0025 (13)	0.0063 (15)	0.0081 (13)
C23	0.0265 (18)	0.0400 (17)	0.0326 (17)	0.0019 (14)	0.0078 (14)	0.0152 (13)
C24	0.0205 (16)	0.0283 (15)	0.0343 (16)	0.0002 (12)	0.0023 (13)	0.0002 (11)
C25	0.0267 (16)	0.0163 (12)	0.0204 (13)	0.0015 (11)	−0.0003 (12)	−0.0013 (10)
C26	0.042 (2)	0.0225 (14)	0.0273 (15)	0.0094 (13)	−0.0057 (14)	0.0014 (11)
C27	0.039 (2)	0.0168 (13)	0.0390 (18)	−0.0041 (13)	0.0057 (15)	−0.0002 (12)
C28	0.042 (2)	0.0203 (13)	0.0242 (15)	0.0059 (13)	−0.0012 (13)	−0.0048 (11)

Geometric parameters (Å, º) top

Ni1—C7	1.736 (3)	C14—H14B	0.9600
Ni1—P2	2.2021 (7)	C14—H14C	0.9600
Ni1—P1	2.2028 (7)	C15—C18	1.530 (4)
P1—O1	1.654 (2)	C15—C16	1.534 (4)
P1—C11	1.882 (2)	C15—C17	1.540 (4)
P1—C15	1.893 (3)	C16—H16A	0.9600
O1—C2ⁱ	1.438 (3)	C16—H16B	0.9600
C1—C6	1.521 (4)	C16—H16C	0.9600
C1—C2	1.523 (4)	C17—H17A	0.9600
C1—H1A	0.9700	C17—H17B	0.9600
C1—H1B	0.9700	C17—H17C	0.9600
P2—O2	1.6448 (19)	C18—H18A	0.9600
P2—C25	1.878 (2)	C18—H18B	0.9600
P2—C21	1.894 (3)	C18—H18C	0.9600
O2—C6	1.438 (3)	C21—C24	1.534 (4)
C2—O1ⁱ	1.438 (3)	C21—C23	1.534 (4)
C2—C3	1.512 (3)	C21—C22	1.536 (4)
C2—H2	0.9800	C22—H22A	0.9600
O3—C7	1.162 (4)	C22—H22B	0.9600
C3—C4	1.518 (4)	C22—H22C	0.9600
C3—H3A	0.9700	C23—H23A	0.9600
C3—H3B	0.9700	C23—H23B	0.9600
C4—C5	1.533 (4)	C23—H23C	0.9600
C4—H4A	0.9700	C24—H24A	0.9600
C4—H4B	0.9700	C24—H24B	0.9600
C5—C6	1.507 (3)	C24—H24C	0.9600
C5—H5A	0.9700	C25—C26	1.526 (4)
C5—H5B	0.9700	C25—C28	1.533 (4)
C6—H6	0.9800	C25—C27	1.537 (4)
C11—C13	1.530 (4)	C26—H26A	0.9600
C11—C12	1.532 (4)	C26—H26B	0.9600
C11—C14	1.533 (4)	C26—H26C	0.9600
C12—H12A	0.9600	C27—H27A	0.9600
C12—H12B	0.9600	C27—H27B	0.9600
C12—H12C	0.9600	C27—H27C	0.9600
C13—H13A	0.9600	C28—H28A	0.9600
C13—H13B	0.9600	C28—H28B	0.9600
C13—H13C	0.9600	C28—H28C	0.9600
C14—H14A	0.9600

C7—Ni1—P2	108.38 (10)	C11—C14—H14C	109.5
C7—Ni1—P1	108.39 (10)	H14A—C14—H14C	109.5
P2—Ni1—P1	143.19 (3)	H14B—C14—H14C	109.5
O1—P1—C11	98.33 (11)	C18—C15—C16	108.2 (2)
O1—P1—C15	96.52 (11)	C18—C15—C17	109.8 (2)
C11—P1—C15	110.98 (12)	C16—C15—C17	108.5 (2)
O1—P1—Ni1	128.58 (7)	C18—C15—P1	114.0 (2)
C11—P1—Ni1	109.51 (9)	C16—C15—P1	104.64 (18)
C15—P1—Ni1	111.55 (9)	C17—C15—P1	111.38 (18)
C2ⁱ—O1—P1	122.67 (16)	C15—C16—H16A	109.5
C6—C1—C2	111.6 (2)	C15—C16—H16B	109.5
C6—C1—H1A	109.3	H16A—C16—H16B	109.5
C2—C1—H1A	109.3	C15—C16—H16C	109.5
C6—C1—H1B	109.3	H16A—C16—H16C	109.5
C2—C1—H1B	109.3	H16B—C16—H16C	109.5
H1A—C1—H1B	108.0	C15—C17—H17A	109.5
O2—P2—C25	98.35 (11)	C15—C17—H17B	109.5
O2—P2—C21	96.88 (11)	H17A—C17—H17B	109.5
C25—P2—C21	110.52 (12)	C15—C17—H17C	109.5
O2—P2—Ni1	128.64 (7)	H17A—C17—H17C	109.5
C25—P2—Ni1	109.50 (8)	H17B—C17—H17C	109.5
C21—P2—Ni1	111.50 (9)	C15—C18—H18A	109.5
C6—O2—P2	123.55 (15)	C15—C18—H18B	109.5
O1ⁱ—C2—C3	110.8 (2)	H18A—C18—H18B	109.5
O1ⁱ—C2—C1	107.85 (19)	C15—C18—H18C	109.5
C3—C2—C1	111.1 (2)	H18A—C18—H18C	109.5
O1ⁱ—C2—H2	109.0	H18B—C18—H18C	109.5
C3—C2—H2	109.0	C24—C21—C23	109.1 (2)
C1—C2—H2	109.0	C24—C21—C22	107.9 (2)
C2—C3—C4	111.3 (2)	C23—C21—C22	108.1 (2)
C2—C3—H3A	109.4	C24—C21—P2	112.14 (18)
C4—C3—H3A	109.4	C23—C21—P2	113.38 (19)
C2—C3—H3B	109.4	C22—C21—P2	105.86 (19)
C4—C3—H3B	109.4	C21—C22—H22A	109.5
H3A—C3—H3B	108.0	C21—C22—H22B	109.5
C3—C4—C5	110.5 (2)	H22A—C22—H22B	109.5
C3—C4—H4A	109.6	C21—C22—H22C	109.5
C5—C4—H4A	109.6	H22A—C22—H22C	109.5
C3—C4—H4B	109.6	H22B—C22—H22C	109.5
C5—C4—H4B	109.6	C21—C23—H23A	109.5
H4A—C4—H4B	108.1	C21—C23—H23B	109.5
C6—C5—C4	111.2 (2)	H23A—C23—H23B	109.5
C6—C5—H5A	109.4	C21—C23—H23C	109.5
C4—C5—H5A	109.4	H23A—C23—H23C	109.5
C6—C5—H5B	109.4	H23B—C23—H23C	109.5
C4—C5—H5B	109.4	C21—C24—H24A	109.5
H5A—C5—H5B	108.0	C21—C24—H24B	109.5
O2—C6—C5	111.2 (2)	H24A—C24—H24B	109.5
O2—C6—C1	106.77 (19)	C21—C24—H24C	109.5
C5—C6—C1	111.3 (2)	H24A—C24—H24C	109.5
O2—C6—H6	109.2	H24B—C24—H24C	109.5
C5—C6—H6	109.2	C26—C25—C28	110.8 (2)
C1—C6—H6	109.2	C26—C25—C27	108.1 (2)
O3—C7—Ni1	176.8 (3)	C28—C25—C27	107.9 (2)
C13—C11—C12	108.3 (2)	C26—C25—P2	110.76 (18)
C13—C11—C14	109.8 (2)	C28—C25—P2	113.90 (17)
C12—C11—C14	107.9 (2)	C27—C25—P2	104.98 (18)
C13—C11—P1	114.45 (18)	C25—C26—H26A	109.5
C12—C11—P1	105.24 (18)	C25—C26—H26B	109.5
C14—C11—P1	110.74 (18)	H26A—C26—H26B	109.5
C11—C12—H12A	109.5	C25—C26—H26C	109.5
C11—C12—H12B	109.5	H26A—C26—H26C	109.5
H12A—C12—H12B	109.5	H26B—C26—H26C	109.5
C11—C12—H12C	109.5	C25—C27—H27A	109.5
H12A—C12—H12C	109.5	C25—C27—H27B	109.5
H12B—C12—H12C	109.5	H27A—C27—H27B	109.5
C11—C13—H13A	109.5	C25—C27—H27C	109.5
C11—C13—H13B	109.5	H27A—C27—H27C	109.5
H13A—C13—H13B	109.5	H27B—C27—H27C	109.5
C11—C13—H13C	109.5	C25—C28—H28A	109.5
H13A—C13—H13C	109.5	C25—C28—H28B	109.5
H13B—C13—H13C	109.5	H28A—C28—H28B	109.5
C11—C14—H14A	109.5	C25—C28—H28C	109.5
C11—C14—H14B	109.5	H28A—C28—H28C	109.5
H14A—C14—H14B	109.5	H28B—C28—H28C	109.5

Symmetry code: (i) −x+3/2, −y+1/2, −z.

Experimental details

Crystal data
Chemical formula	[Ni₂(C₂₂H₄₆O₂P₂)₂(CO)₂]
M_r	982.50
Crystal system, space group	Monoclinic, C2/c
Temperature (K)	120
a, b, c (Å)	31.7851 (9), 8.5449 (2), 21.3311 (5)
β (°)	90.995 (2)
V (Å³)	5792.7 (3)
Z	4
Radiation type	Mo Kα
µ (mm⁻¹)	0.80
Crystal size (mm)	0.2 × 0.15 × 0.05

Data collection
Diffractometer	Agilent Xcalibur Sapphire3 diffractometer
Absorption correction	Multi-scan (CrysAlis PRO; Agilent, 2011)
T_min, T_max	0.883, 1.000
No. of measured, independent and observed [I > 2σ(I)] reflections	27324, 6958, 4948
R_int	0.073
(sin θ/λ)_max (Å⁻¹)	0.685

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.050, 0.125, 1.09
No. of reflections	6958
No. of parameters	263
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	0.61, −0.46

Computer programs: CrysAlis PRO (Agilent, 2011), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), CrystalMaker (CrystalMaker, 2001).

Acknowledgements

Financial support from the Swedish Research Council and the Knut and Alice Wallenberg Foundation is gratefully acknowledged.

References

Agilent (2011). CrysAlis PRO. Agilent Technologies Inc., Santa Clara, CA, USA. Google Scholar
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Volume 70| Part 5| May 2014| Pages m176-m177

doi:10.1107/S1600536814007818

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